This book was 50% review of other brands and ad campaigns, 30% bragging about how cool the "experiments" were, 10% new data that was only semi compelling, and 10% telling you what they just told you.
If they really stretched it, this should have been a 3 page article in a reader's digest. Maybe a 1,000 word article in the WSJ.
The most interesting thing I learned was about "mirror neurons" and how our brains imagine, e.g., eating an apple when only watching someone else do it. But that is not enough for a whole book. There were other tidbits but not worth the $ or effort to learn them.
I bought this book on tape along with "Tribes" by Godin. Audible is giving that one away for free. I would have paid $20 for Tribes and nothing for Buyology. It's almost as if the author of Buyology said "well since I have spent all this money for research I guess I should write a book."